Electrical transport properties of microwave-synthesized Bi 2Se3-xTex nanosheet

Haiming Xu; Gang Chen; Rencheng Jin; Dahong Chen; Jian Pei; Yu Wang

doi:10.1039/c3ce40296g

Electrical transport properties of microwave-synthesized Bi ₂Se_3-xTe_x nanosheet

Haiming Xu
, Gang Chen^*
, Rencheng Jin
, Dahong Chen
, Jian Pei
, Yu Wang

^*Corresponding author for this work

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

Tellurium (Te) doped bismuth selenide (Bi₂Se _3-xTe_x) nanosheets have been successfully synthesized by the microwave-assisted method in the presence of ethylene glycol (EG). The obtained products were characterized by powder X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), selected-area electron diffraction (SAED), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy techniques. The electrical transport properties of the nanosheets are investigated by measuring the electrical conductivity and the Seebeck coefficient at temperatures ranging from 298 to 523 K. The power factor values of the Bi₂Se_3-xTe_x nanosheet vary with different doping concentrations of Te, and the maximum power factor can reach 178 μW m^-1 K^-2 at 523 K for Bi₂Se _2.7Te_0.3, indicating the potential application in thermoelectric devices.

Original language	English
Pages (from-to)	5626-5632
Number of pages	7
Journal	CrystEngComm
Volume	15
Issue number	28
DOIs	https://doi.org/10.1039/c3ce40296g
State	Published - 28 Jul 2013

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title = "Electrical transport properties of microwave-synthesized Bi 2Se3-xTex nanosheet",

abstract = "Tellurium (Te) doped bismuth selenide (Bi2Se 3-xTex) nanosheets have been successfully synthesized by the microwave-assisted method in the presence of ethylene glycol (EG). The obtained products were characterized by powder X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), selected-area electron diffraction (SAED), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy techniques. The electrical transport properties of the nanosheets are investigated by measuring the electrical conductivity and the Seebeck coefficient at temperatures ranging from 298 to 523 K. The power factor values of the Bi2Se3-xTex nanosheet vary with different doping concentrations of Te, and the maximum power factor can reach 178 μW m-1 K-2 at 523 K for Bi2Se 2.7Te0.3, indicating the potential application in thermoelectric devices.",

author = "Haiming Xu and Gang Chen and Rencheng Jin and Dahong Chen and Jian Pei and Yu Wang",

year = "2013",

month = jul,

day = "28",

doi = "10.1039/c3ce40296g",

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TY - JOUR

T1 - Electrical transport properties of microwave-synthesized Bi 2Se3-xTex nanosheet

AU - Xu, Haiming

AU - Chen, Gang

AU - Jin, Rencheng

AU - Chen, Dahong

AU - Pei, Jian

AU - Wang, Yu

PY - 2013/7/28

Y1 - 2013/7/28

N2 - Tellurium (Te) doped bismuth selenide (Bi2Se 3-xTex) nanosheets have been successfully synthesized by the microwave-assisted method in the presence of ethylene glycol (EG). The obtained products were characterized by powder X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), selected-area electron diffraction (SAED), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy techniques. The electrical transport properties of the nanosheets are investigated by measuring the electrical conductivity and the Seebeck coefficient at temperatures ranging from 298 to 523 K. The power factor values of the Bi2Se3-xTex nanosheet vary with different doping concentrations of Te, and the maximum power factor can reach 178 μW m-1 K-2 at 523 K for Bi2Se 2.7Te0.3, indicating the potential application in thermoelectric devices.

AB - Tellurium (Te) doped bismuth selenide (Bi2Se 3-xTex) nanosheets have been successfully synthesized by the microwave-assisted method in the presence of ethylene glycol (EG). The obtained products were characterized by powder X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), selected-area electron diffraction (SAED), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy techniques. The electrical transport properties of the nanosheets are investigated by measuring the electrical conductivity and the Seebeck coefficient at temperatures ranging from 298 to 523 K. The power factor values of the Bi2Se3-xTex nanosheet vary with different doping concentrations of Te, and the maximum power factor can reach 178 μW m-1 K-2 at 523 K for Bi2Se 2.7Te0.3, indicating the potential application in thermoelectric devices.

UR - https://www.scopus.com/pages/publications/84879742983

U2 - 10.1039/c3ce40296g

DO - 10.1039/c3ce40296g

M3 - 文章

AN - SCOPUS:84879742983

SN - 1466-8033

VL - 15

SP - 5626

EP - 5632

JO - CrystEngComm

JF - CrystEngComm

IS - 28

ER -

Electrical transport properties of microwave-synthesized Bi ₂Se_3-xTe_x nanosheet

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